15880975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 23569920

約数和(自身を除く): 7688945

約数列:

[1, 5, 11, 17, 25, 43, 55, 79, 85, 187, 215, 275, 395, 425, 473, 731, 869, 935, 1075, 1343, 1975, 2365, 3397, 3655, 4345, 4675, 6715, 8041, 11825, 14773, 16985, 18275, 21725, 33575, 37367, 40205, 57749, 73865, 84925, 186835, 201025, 288745, 369325, 635239, 934175, 1443725, 3176195, 15880975]

約数ペア:

[(1, 15880975), (5, 3176195), (11, 1443725), (17, 934175), (25, 635239), (43, 369325), (55, 288745), (79, 201025), (85, 186835), (187, 84925), (215, 73865), (275, 57749), (395, 40205), (425, 37367), (473, 33575), (731, 21725), (869, 18275), (935, 16985), (1075, 14773), (1343, 11825), (1975, 8041), (2365, 6715), (3397, 4675), (3655, 4345)]